Bottlehead S.E.X. 3.0 C4S Upgrade Kit
This easy-to-install kit that will give your current version 3.0 S.E.X. kit a more quiet background, better resolution and tighter bass. This kit is available for pre-January 2023 S.E.X. 3.0 kits. As of January 2023 this kit is included with the Basic S.E.X. 3.0 kit. This kit will not work with earlier S.E.X kits.
Pairs well with
Bottlehead S.E.X. 3.0 C4S Upgrade Kit
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Additional details
Yes, you can do it!
Bottleheads have been assembling our kits for over thirty years. Every kit includes the parts and components you need to build the kit plus an incredibly detailed manual with step-by-step instructions and close-up photos. Check out this sneak peek into what every manual includes. We've also put together a handy list of the tools you'll need to bring along.
Need some assistance or inspiration? Check our user forums.
Just add tools
Bottlehead kits come complete with everything you need to assemble. We provide the wood base, chassis plate, tubes, hardware, wire, circuit boards, and electronic components. You just provide the tools and solder.
Check out this blog post to see what comes in every kit, and this handy list of tools and equipment you should gather before you begin.
FAQs
Please read our FAQs page to find out more.